Subaru Finds Size‑Color Link in Jupiter Trojans
Why it matters: The finding refines Solar System formation models, impacting how we estimate the ~10,000 Jupiter Trojans.
- Subaru Telescope captured deep, wide‑field images with its Suprime‑Cam, enabling precise color and size measurements of Trojans.
- Suprime‑Cam provided the high‑resolution photometry that revealed the correlation between asteroid size and spectral redness.
- Jupiter Trojan asteroids show a systematic color gradient, a nuance that expands on prior surveys which reported mixed colors but no size link.
Using Subaru’s Suprime‑Cam, astronomers uncovered a clear size‑color trend among Jupiter Trojan asteroids—larger Trojans appear redder—challenging earlier ideas of a uniform population.
